Madison police arrest person of interest in fatal Culver’s robbery

MADISON - A person of interest has been arrested in an armed robbery at a Culver’s restaurant that left a contractor dead, Madison police said Friday.

The man was arrested without incident in Janesville on Friday afternoon, police said.

Madison police were looking for two suspects after the robbery-turned-homicide early Tuesday. Christ Edward Kneubuehl, 56, of Twin Lakes, was working on a remodeling project at the restaurant when two armed and masked robbers entered, police said. Kneubuehl apparently suffered a fatal heart attack after opening a safe for the robbers, police said.

The robbers wouldn’t let the three other men working with Kneubuehl help him, police said.